Orthodontia appliance.



E. H. ANGLE.

ORTHODONTIA APPLIANCE. APPLICATION HLED AUG.22. 191a.

Patented June 15; 1915.

EDWARD H. AiveLn, on NEW LONDON, connncrrcur.

ORTHODONTIA APPLIANCE.

Specification of Letters Patent.

Patented June 15;, 1915.

Application filed August 22, 1913. Serial No. 786,056.

To all whom it ma concern: 1

Be it lmown til at I, EDWARD H. ANGLE, a citizen of the United States,and a resident of N ew;London, in the county of New London, State ofConnecticut, have invented certain new and useful Improvements inOrthodontia Appliances, of which the following is a specification,reference being had to the accompanying drawings.

My invention relates to'devices employed in the art of orthodontia,particularly to that class of devices which include an arch bow, and isespecially directed to the means for detachably connecting selectedteeth of the dental arch to the arch-bow.

The principal objects of my invention are, to provide simple andeflicient means for aflording-ready attachment and detachment of thearch-bow with selected teeth of the dental arch; and to provide means toprevent the accidental displacement of said arch-bow from thetooth-attaching means when engaged therewith.

Other objects of my invention are, to provide sucha connection of thearch-bow with the selected teeth of the dental arch as will readilyproduce rotative and axial movement of the teeth, as well. as efl'ectlateral adjustment; and to provide an arch-bow of such flexibility aswill tend to automatically aline the teeth into the correct dental arch.

My invention comprehends a tooth-band having a slotted projection, and aflexible arch-bow of such cross-section as will be received within theslot in said projection without relatively rotating therein. 7

My invention also comprises a headed locking-bolt fitted in a slot insaid projection, and prevented from relative rotation therein, forretaining said arch-bow engaged in its slot.

My invention also includes all of the various novel features. ofconstruction and arrangement hereinafter more definitely specified.

In the accompanying drawings, Figure l is an inverted plan view of theupper human dental arch, showing a convenient embodiment of my inventionattached to selected teeth; Fig. 2 is a greatly enlarged plan view ofone of the tooth attachments. Fig. 3 is 'a front elevational view of thetooth attachment shown in Fig. 2; Fig. 4c is a fragmentary perspectiveview of a tooth attaching band engaged with the arch-bow; Flg. 5 1s atransversely sectional view taken on the line 5-5 in Fig. 4; Fig. 6 is afragmentary perspective view of the tooth-band lnverted; Fig. 7 is afragmentary sectional view of a tooth-band'embodying a modified formofattaching member; Fig. 8 is a perspective View of the attaching. membershown 1n Fig. 7, per- 86, Fig. 9 is a fragmentary sectional view of atooth-band embodying another modified form of attaching member; and Fig.10 is a perspective'view of the attaching member, shown in Fig. 9, perse.

The tooth regulating appliance to which this invention is especiallyapplicable is indicated in a general way in Fig. 1, and includes,together with associated .parts, an

arch-bow consisting of a resilient middle section 12 fitted in suitablesockets 13 and 14 in the externally threaded end sections 15 and16,-which respectively pass through nuts 17 and 18, loosely inserted inthe anchor.

tubes 19 and 20 of the respective anchor bands 21 and 22, as shown indetail in a prior Patent #1014030, granted to me Jan. 9 1912.

As shown in Fig. 1 the anchor bands 21 and 22 are respectively securedto the first molars 23 and 24 upon opposite sides of the dental arch, bythe adjusting nuts 25- and 26 on the threaded stems 27 and 28respectively projecting from one end of the respective anchor bands 21and 22, and extending through the eyes 29 and 30 respectively carriedbythe other free ends of the respective anchor bands.

My improvement resides in the means for detachably securing an malposedteeth in the dental arch tothe archow, and as best shown in Figs. 2 and3 such means is formed of a strip 32 of sheet material, preferablymetal,

which may be bent to form'the band as shown in dot and dash lines inFig. 2, to embrace selected teeth as shown in Fig. 1, the ends of saidstrip 32 may if desired, be secured together inv any suitable manner.

To the strip 32 is secured the lug or pro-' jection 33 having an openslot 34 in one wall thereof for the reception of the middle section 12of the arch bow, which is, preferably of rectangular cross-section asbest shown in Figs. 4 and 5, and of a breadth greater than itsthickness.

The piece forming lug or projection 33 is also slotted in a directiontransverse to the slot 34;, in its wall which is joined to the strip 32.so that when said piece is secured said locking-bolt 36 may be bent overto remm it in position and thereby effect the locking of said arch-bowin its slot.

It will be observed from inspection of Figs. 4 and 5 that thelocking-bolt 36 as well as the arch-bow 12 is of arectangularcross-section, to prevent their rotation in their respective slots, andwhile such configuration is deemed to ,be preferable, it is to beunderstood that other shapes may be as readily employed, so long as thearchbow is fitted to its slot in such a manner as to effect the desiredtwisting action on the malposed tooth toward its normal alinement.

V with an exterior lug'56 secured thereto,

' through In the form of my invention shown in Figs. 7 and 8, thetooth-band 4C5 is provided with an exterior bifurcated lug 46 securedthereto, and having a slot 47 in its outer wall for the reception of thearch-bow 48, which is arranged to be held in said slot againstaccidental displacement, by the locking-bolt 49 which is extendedthrough alined apertures 50 and 51 in therespective bifurcations 52 and53 of the lug 46, exterior said arch-bow 48. The locking-bolt 49 may beconveniently provided with the head 54 forming a stop therefor.

In the form of my invention shown in Figs. 9 and 10, the tooth-band 55is providegll an having a slot 57 in its outer wall for the reception ofthe arch-bow 58, which is arranged to be snugly fitted therein bylateral adjustment, and prevented from accidental displacement, by theretaining guard 59 which is preferably formed of wire passed theaperture 60 and bent over the outer wall of the lug 56 and'arch-bow 58,and having its opposite ends twisted as shownat 62. As shown in Fig. 10the piece forming the lug 56-may be slotted along the wall which joinsthe band 55 to form the aperture 60 when said lug is secured to theband, as shown in Fig. 9.

lit will be readily seen that when the strip 32 is to be applied to amolar tooth, wherein theband will be substantially cylindrical, the endsof said strip should be trimmed substantially at right angles to theedge of said strip, but when it is to be apa tapering tooth such as anincisor the ends should be tried plied to or cuspid tooth,

weather the precise details of construction and arrangement herein setforth, as it is obvious that various modifications may be made thereinwithout departing from the essential features of my invention as definedin the appended claims.

Having thus described my invention, I claim:

1. An orthodontia appliance, comprising a tooth-band having a projectionprovided with an open sided slot having an abutment surface inopposition to the plane of said band, and an arch-bow detachably fittedin the slot in said projection and having means comprising thelongitudinal walls of the bar forming the bow cotiperative with thewalls of the slot, to prevent its rotation in said slot and arranged toengage said abutment surface to force said band radially outward.

projection and having means to prevent its rotation in said slot, and alocking-bolt extending transversely with respect to said arch-bow andwithin the arch, for preventing the accidental displacement of thelatter.

3. An orthodontia appliance, comprising means for engaging selectedteeth of the dental arch, and having a slot forming an open sided recesstherein and an aperture extending transversely with respect to saidslot, a flattened arch-bow laterally inserted and snugly fitted in saidslot and having means comprising its longitudinal surfaces to preventits relative rotation, and a lock ing-bolt fitted in said aperture,arranged to prevent the accidental displacement of said arch-bow andhaving means to prevent its relative rotation to said how.

d. An orthodontia appliance, comprising a tooth-band formed of a stripof sheet material arranged to be wrapped around select= ed teeth of thedental arch and having a pro jection provided with an open ended slotextending across one wallthereof, for t' reception of an arch-bowlaterally, and hav-- 10 a tooth-band provided with a 5. An orthodontiaappliance, comprising a tooth-band having a slotted projection, alaterally adjustable arch-bow formed of a polygonal flexible bar snuglyfitted in the 5 slot in said projection, and means independent of saidarch-bow to prevent the accidental displacement of said bar from saidslot.

' 6. An orthodontia appliance, comprising projecting lug having a freemember extending toward one edge thereof, between which and thetooth-band is a recess in which an arch-bow ma be retained.

n testimony whereof, I have hereunto set 15 my hand this 13 day of Au stA. 1)., 1913.

y EDWAR H. ANGLE. Witnesses:

F. E. FENGAR, S. AVERY.

